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Keto Chicken Cordon Bleu Casserole on a spoon

Keto Chicken Cordon Bleu Casserole

Keto chicken cordon bleu casserole is a rich and comforting recipe with a fraction of the carbs. Cauliflower, ham, and chicken smothered in a delicious dijon cheese sauce makes the perfect low carb casserole.
Course Main
Cuisine American
Keyword chicken cordon bleu casserole, keto chicken cordon bleu
Prep Time 15 minutes
Cook Time 1 hour 10 minutes
Total Time 1 hour 25 minutes
Servings 10
Calories 605kcal
Author Kat Jeter & Melinda Caldwell


  • 16 ounces Cauliflower florets cut into bite-size pieces
  • 24 ounces Chicken breast
  • 12 ounces Ham cut into small cubes
  • 1 teaspoon Onion powder
  • 1 teaspoon Garlic powder
  • ½ teaspoon Salt
  • ¼ teaspoon Pepper
  • 3 tablespoons Butter
  • 2 cloves Garlic
  • 2 cups Heavy cream
  • 4 tbsp Dijon mustard
  • 16 ounces Gruyere cheese grated and divided
  • 9 ounces Shredded mozzarella cheese divided


  • Steam the cauliflower. Place cut cauliflower in a microwave safe bowl with 1 cup of water. Cover with a damp paper towel and microwave on high for approximately 3-5 minutes or until the cauliflower is fork tender. Don’t overcook!
  • Drain the cauliflower pat dry with a paper towel. Set aside.
  • Cut the chicken breast into 1-inch cubes and sprinkle with onion powder, garlic powder, salt, and pepper.
  • In a skillet over medium high heat add your olive oil and the cubed chicken. Cook for approximately 10 minute, or until chicken is cooked through. Set aside.
  • Preheat oven to 350 degrees F.
  • Clean the skillet, removing any burnt bits from the pan and then melt 3 tablespoons of butter in the skillet over medium heat.
  • Once butter has melted add the garlic to the pan and cook for 1 minute.
  • Pour the heavy cream into the pan and bring it to a simmer over medium heat. Make sure to stir often so the cream doesn’t burn.
  • Stir in the Dijon mustard and then add 6 ounces of Gruyere cheese. Keep stirring until the cheese sauce begins to thicken, approximately 3-5 minutes. You will know it is ready when the sauce is thick enough to coat the back of your spoon.
  • Add 3 ounces of mozzarella cheese to the sauce and stir until it is melted and the sauce is smooth. Turn the heat to low and keep the sauce warm while you assemble the casserole.
  • Prepare a 13×9 inch casserole dish by spraying it with non-stick spray then spread ½ cup of the cheese sauce on the bottom.
  • Next add half of the cauliflower to the dish making a layer of it on the bottom.
  • Top with half of the cooked chicken and half of the ham. Let the meat fill in the spaces between the cauliflower to fill the dish.
  • Pour ½ of the remaining cheese sauce over the cauliflower, chicken, and ham.
  • Sprinkle 5 ounces of Gruyere on top and 3 ounces of mozzarella cheese over the chicken and ham.
  • Add the remaining cauliflower, chicken, and ham, to make a second layer.
  • Pour the remaining cheese sauce over the top then sprinkle on the remaining Gruyere and mozzarella cheese.
  • Place in the oven and bake for 30 minutes, or until the casserole is warmed through and the cheese is fully melted.


Calories: 605kcal | Carbohydrates: 5g | Protein: 42g | Fat: 46g | Saturated Fat: 26g | Trans Fat: 1g | Cholesterol: 213mg | Sodium: 1031mg | Potassium: 593mg | Fiber: 1g | Sugar: 1g | Vitamin A: 1432IU | Vitamin C: 31mg | Calcium: 641mg | Iron: 1mg